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Finding the Fourth Proportional to 713,946.43, 985,240.56 and 391,654.32

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Solution

The fourth proportional to 713,946.43, 985,240.56 and 391,654.32 is: 540,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,946.43 : 985,240.56 = 391,654.32 : x
  2. Step 2: Convert to fraction form
    713,946.43/985,240.56 = 391,654.32/x
  3. Step 3: Cross multiply
    713,946.43x = 985,240.56 × 391,654.32
  4. Step 4: Simplify right side
    713,946.43x = 385,873,721,563.22
  5. Step 5: Solve for x
    x = 385,873,721,563.22/713,946.43
  6. Step 6: Final answer
    x = 540,479.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.